Gossamer Forum: Products: DBMan: Customization: Using JavaScript to Validate form input

Here are the steps if for some reason you wished to use JavaScript to validate dbman form input (check for empty fields)

Code:
1. Change and Upload the attached file to your site (validate.js) 

2. Modify the sub html_add_form: 

	a. add the line below between the <head></head> tags: 
	<script language="JavaScript" src="http://www.yourdomain.com/validate.js"></script> 

	b. change: 

	<form action="$db_script_url" method="POST"> 

	to: 

	<form action="$db_script_url" method="POST" name="form"> 

	c. replace: 

	<INPUT TYPE="SUBMIT" NAME="add_record" VALUE="Add Record"> 

	with: 

	<input type="hidden" name="add_record" value="1"> 
	<input type="button" name="button" value="Add Record" onClick="formvalidation(this.form);"> 

3. Repeat steps for sub html_modify_form_record (changing add_record to modify_record)

The advantage to using JavaScript is that it places some of the processing burden on the 'client-side' instead of the 'server-side' and can be used to dynamically generate/validate field input, etc.

The disadvantage is that the end-user (ie, client-side) can turn off JavaScript in the browser settings and pretty much make your form useless.

Using JavaScript to Validate form input

Attached Files: